5 ms·
https://www.climate.gov/sites/default/files/paleo_CO2_2018_1500.gif https://www.climate.gov/sites/default/files/paleo_CO2_2018_1...
by faded242 7y ago
https://www.climate.gov/sites/default/files/paleo_CO2_2018_1500.gif https://www.climate.gov/sites/default/files/paleo_CO2_2018_1...